Trump's visit to the Granite State came on the same day that the conservative Union Leader chose to endorse Libertarian Gary Johnson for president, the first time in 100 years the newspaper has not endorsed a Republican.

In Portsmouth, he met with leaders for Stay Work Play, a nonprofit group that encourages young workers to stay in the state.

Addressing a Democratic organizing event in Exeter, Kaine referred to Trump's 2015 book "Crippled America," which criticizes the direction of the country under Democratic leadership.

He described Trump as out-of-touch, saying the billionaire businessman's philosophy is "a view out of the penthouse of a tall tower." He continued: "I do not recognize this picture of our country. This is not who we are."

Kaine is also scheduled to attend a private fundraising event in Maine later on Thursday.